A sub-millisecond optical switch operation was reported for an array of 1x2 switches for intelligent optical network (ION). By utilizing a micromachined wedge-shaped double side micro-mirror to implement an input optical beam path change, the design achieved a high level integration of multiple switches on a single substrate,and significantly reduced mirror traveling distance or angle for switch operation and thus shortened the switch time. An array of four 1×2 switches was fabricated on an aluminum substrate with an overall size of only 60×36×7 mm3 . Performance of the switch array prototype was reported, featuring a fast switch time of less than 750 μs and extremely low cross-talk <-70 dB with an insertion loss of between 0.6 and 0.8 dB. An analysis on switch time was conducted using a commercial finite element analysis software package ANSYS and a good agreement was obtained between the measured and calculated switch time.